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Option Compare Database
Option Explicit
' هذه الوحدة مختصة بعرض الصور من نوع GIF
Public مسار_الوثيقة As String
Private Type POINTAPI
X As Long
Y As Long
End Type
Private Type RECTL
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private Type SIZEL
cx As Long
cy As Long
End Type
Private Type RGBQUAD
rgbBlue As Byte
rgbGreen As Byte
rgbRed As Byte
rgbReserved As Byte
End Type
Private Type BITMAP
bmType As Long
bmWidth As Long
bmHeight As Long
bmWidthBytes As Long
bmPlanes As Integer
bmBitsPixel As Integer
bmBits As Long
End Type
Private Type BITMAPINFOHEADER '40 bytes
biSize As Long
biWidth As Long
biHeight As Long
biPlanes As Integer
biBitCount As Integer
biCompression As Long
biSizeImage As Long
biXPelsPerMeter As Long
biYPelsPerMeter As Long
biClrUsed As Long
biClrImportant As Long
End Type
Private Type BITMAPINFO
bmiHeader As BITMAPINFOHEADER
' bmiColors As RGBQUAD ' No COlors 24 bit RGB
End Type
Private Declare Function apiCloseEnhMetaFile Lib "gdi32" _
Alias "CloseEnhMetaFile" (ByVal hdc As Long) As Long
' lprect as RECT changed to as BYVAL as Any to allow for NULL
Private Declare Function apiCreateEnhMetaFile Lib "gdi32" _
Alias "CreateEnhMetaFileA" (ByVal hDCref As Long, _
ByVal lpFileName As String, ByVal lpRect As Any, ByVal lpDescription As
String) As Long
Private Declare Function apiDeleteEnhMetaFile Lib "gdi32" _
Alias "DeleteEnhMetaFile" (ByVal hemf As Long) As Long
Private Declare Function GetEnhMetaFileBits Lib "gdi32" _
(ByVal hemf As Long, ByVal cbBuffer As Long, lpbBuffer As Byte) As Long
Private Declare Sub apiCopyMemory Lib "KERNEL32" Alias "RtlMoveMemory" _
(Destination As Any, Source As Any, ByVal Length As Long)
Private Declare Function apiSelectObject Lib "gdi32" _
Alias "SelectObject" (ByVal hdc As Long, ByVal hObject As Long) As Long
Private Declare Function apiGetDC Lib "user32" _
Alias "GetDC" (ByVal hwnd As Long) As Long
Private Declare Function apiReleaseDC Lib "user32" _
Alias "ReleaseDC" (ByVal hwnd As Long, _
ByVal hdc As Long) As Long
Private Declare Function apiCreateCompatibleDC Lib "gdi32" _
Alias "CreateCompatibleDC" (ByVal hdc As Long) As Long
Private Declare Function apiDeleteDC Lib "gdi32" _
Alias "DeleteDC" (ByVal hdc As Long) As Long
Private Declare Function apiBitBlt Lib "gdi32" _
Alias "BitBlt" (ByVal hDestDC As Long, ByVal X As Long, ByVal Y As Long,
_
ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, _
ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Long
Private Declare Function apiDeleteObject Lib "gdi32" _
Alias "DeleteObject" (ByVal hObject As Long) As Long
Private Declare Function apiGetObject Lib "gdi32" Alias "GetObjectA" _
(ByVal hObject As Long, ByVal nCount As Long, lpObject As Any) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" _
(ByVal hwnd As Long, ByVal wMsg As Long, _
ByVal wParam As Long, lParam As Any) As Long
' CONSTANTS
Private Const WM_HSCROLL = &H114
Private Const WM_VSCROLL = &H115
' Scroll Bar Commands
Private Const SB_LINEUP = 0
Private Const SB_LINELEFT = 0
Private Const SB_LINEDOWN = 1
Private Const SB_LINERIGHT = 1
Private Const SB_PAGEUP = 2
Private Const SB_PAGELEFT = 2
Private Const SB_PAGEDOWN = 3
Private Const SB_PAGERIGHT = 3
Private Const SB_THUMBPOSITION = 4
Private Const SB_THUMBTRACK = 5
Private Const SB_TOP = 6
Private Const SB_LEFT = 6
Private Const SB_BOTTOM = 7
Private Const SB_RIGHT = 7
Private Const SB_ENDSCROLL = 8
' Ternary raster operations
Private Const SRCCOPY = &HCC0020 ' (DWORD) dest = source
' Predefined Clipboard Formats
Private Const CF_TEXT = 1
Private Const CF_BITMAP = 2
Private Const CF_METAFILEPICT = 3
Private Const CF_SYLK = 4
Private Const CF_DIF = 5
Private Const CF_TIFF = 6
Private Const CF_OEMTEXT = 7
Private Const CF_DIB = 8
Private Const CF_PALETTE = 9
Private Const CF_PENDATA = 10
Private Const CF_RIFF = 11
Private Const CF_WAVE = 12
Private Const CF_UNICODETEXT = 13
Private Const CF_ENHMETAFILE = 14
Function fStdPicToImageData(hStdPic As Object, ctl As Access.Image, _
Optional FileNamePath As String = "") As Boolean
'On Error GoTo ERR_SHOWPIC
' Temp Device Context handles
Dim hDCref As Long, hdc As Long
' Temp GDI Bitmap handles
Dim hBmap As Long
Dim hBmapOrig As Long
' Temp var to hold API returns
Dim lngRet As Long
' Bitmap structure to hold Image props
Dim Bm As BITMAP
' handle to EMF
Dim hMetafile As Long
' handle to Metafile DC
Dim hDCMeta As Long
' Array to hold binary copy of Enhanced Metafile
' we will create.
Dim arrayMeta() As Byte
' Temp DC to select StdPicture object into
hdc = apiCreateCompatibleDC(0)
' It must be GetDC not CreateCompatibleDC!!!
hDCref = apiGetDC(0)
' Make sure user hasn't tricked us by renaming
' a graphic file mistakenly to JPG OR GIF.
If hStdPic.Type <> 1 Then
Err.Raise vbObjectError + 523, "CreateBitmapFromImageCtl.modStdPic", _
"الكود يعرض صور من نوع GIF أو JPG فقط ." & vbCrLf & "اختر أحد هذين
النوعين فقط"
End If
' Get the Original Images Width and Height props
lngRet = apiGetObject(hStdPic, Len(Bm), Bm)
' Can we read the picture dimensions
If Bm.bmWidth <= 0 Then
Err.Raise vbObjectError + 524, "CreateBitmapFromImageCtl.modStdPic", _
"Sorry...cannot read Image Dimensions. Please Select a Valid JPEG or GIF
File"
End If
hBmapOrig = apiSelectObject(hdc, hStdPic)
' Create our Enhanced Metafile - Memory Based
hDCMeta = apiCreateEnhMetaFile(hDCref, vbNullString, 0&, vbNullString)
If hDCMeta = 0 Then
Err.Raise vbObjectError + 525, "CreateBitmapFromImageCtl.modStdPic", _
"Sorry...cannot Create Enhanced Metafile"
End If
' Copy the contents of our StdPicture object over
' into the Enhanced Metafile we created.
lngRet = apiBitBlt(hDCMeta, 0&, 0&, Bm.bmWidth, _
Bm.bmHeight, hdc, 0, 0, SRCCOPY)
' Cleanup our Bitmaps
If hBmapOrig <> 0 Then
lngRet = apiSelectObject(hdc, hBmapOrig)
Call apiDeleteObject(hBmap)
End If
' Delete our Memory DC
Call apiDeleteDC(hdc)
' Close EnhMetafile
If hDCMeta <> 0 Then
hMetafile = apiCloseEnhMetaFile(hDCMeta)
End If
' Grab the contents of the Metafile
lngRet = GetEnhMetaFileBits(hMetafile, 0, ByVal 0&)
ReDim arrayMeta((lngRet - 1) + 8)
lngRet = GetEnhMetaFileBits(hMetafile, lngRet, arrayMeta(8))
' Delete EMF memory footprint.
lngRet = apiDeleteEnhMetaFile(hMetafile)
arrayMeta(0) = CF_ENHMETAFILE
ctl.PictureData = arrayMeta
EXIT_SHOWPIC:
Call apiDeleteDC(hdc)
lngRet = apiReleaseDC(0&, hDCref)
Exit Function
ERR_SHOWPIC:
MsgBox Err.Description, vbOKOnly, Err.Source & ":" & Err.Number
Resume EXIT_SHOWPIC
End Function
Public Function fLoadPicture(ctl As Access.Image, Optional strfName As
String = "") As Boolean
'On Error GoTo Err_fLoadPicture
' Temp Vars
Dim lngRet As Long
Dim blRet As Boolean
' Our StdPicture object returned by LoadPicture
Dim hPic As Object
' Were we passed the Optional FileName and Path
If Len(strfName & vbNullString) = 0 Then
' Call the File Common Dialog Window
Dim clsDialog As Object
Dim StrTemp As String
strfName = strfName
'clsDialog.FileName
If Len(strfName & vbNullString) = 0 Then
' Raise the exception
Err.Raise vbObjectError + 513, "CreateBitmapFromImageCtl.modStdPic", _
"الكود يعرض صور من نوع GIF أو JPG فقط ."
End If
End If
Application.Screen.MousePointer = 11
' Load the Picture as a StandardPicture object
Set hPic = LoadPicture(strfName)
If hPic = 0 Then
Err.Raise vbObjectError + 514, "CreateBitmapFromImageCtl.modStdPic", _
"الكود يعرض صور من نوع GIF أو JPG فقط ."
End If
blRet = fStdPicToImageData(hPic, ctl)
' Scroll the Form back to X:0,Y:0
ScrollToHome ctl
' Cleanup
fLoadPicture = True
Exit_LoadPic:
' Set the MousePointer back to Default
Application.Echo True
Application.Screen.MousePointer = 0
Err.Clear
Set hPic = Nothing
Set clsDialog = Nothing
Exit Function
Err_fLoadPicture:
fLoadPicture = False
MsgBox Err.Description, vbOKOnly, Err.Source & ":" & Err.Number
Resume Exit_LoadPic
End Function
Public Sub ScrollToHome(ctl As Control)
Dim lngRet As Long
' Temp counter
Dim lngTemp As Long
' Be careful because of Echo Off
On Error Resume Next
' Stop Screen Redraws
Application.Echo False
For lngTemp = 1 To 9
lngRet = SendMessage(ctl.Parent.hwnd, WM_VSCROLL, SB_PAGEUP, 0&)
lngRet = SendMessage(ctl.Parent.hwnd, WM_HSCROLL, SB_PAGELEFT, 0&)
Next lngTemp
' Start Screen Redraws
Application.Echo True
End Sub |
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